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Write an experimental design

  1. Sep 8, 2005 #1
    Due NO LATER THAN October 1

    Write an experimental design based on any graph from the textbook. You may make slight alterations to the graph. Include all pertinent parts to a good design.

    On a separate sheet of paper, identify the following from your design: observations, hypothesis, independent variable, dependent variable, control group, experimental group, several constants, concluding statement.

    ANY IDEAS IT'S FROM THE 9TH GRADE TEXT BOOK (BIOLOGY: PRINCIPLES & EXPLORATIONS)

    COPYRIGHT c 2001 by HOLT, RINEHART AND WISTON
    ISBN 0-03-051999-3
    1 2 3 4 5 6 7 8 048 05 04 03 02 01 00 99


    and this web site does not come up it's in my book http://www.scillinks.org/ instead some other website pop up like a search engine.
     
  2. jcsd
  3. Sep 10, 2005 #2

    andrevdh

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    Homework Helper

    A graph indicates the relationship between two variables (sets of measurements in an experiment) describing some phenomena (like the relation between the extension of a spring as a result of an applied force). In the experiment one quantity is changed by the experimenter (the applied force) and the other changes as a result of this (the extension of the spring). In the case of the spring experiment the force is the independent variable (the quantity that the experimenter changed himself), while the extension of the spring is the dependent variable. During the experiment some other quantities that might influence the dependent variable need to be kept constant like for the spring it's temperature should be kept constant (heating it up would result in the spring becomming softer). Go through the graphs in your textbook and see if you can identify the independent and dependent quantities together with some other quantities that could influence the dependent variable (the constants).
     
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